Boiler-furnace and smoke-consumer



(No Model.) 2 Sheets-Sheet '1.

J. GONNELLY. BOILER FURNACE AND SMOKE CONSUMER.

No. 486,854. Patented Nov. 29, 1892 (No Model.) 2 Sheets-Sheet 2.

J. OONNELLY. I BOILER FURNACE ,AND SMOKE CONSUMER. No. 486,854. PatentedNOV. 29, 1892.

UNITED STATES PATENT OFFICE.

JAMES CONNELLY, OF DES MOINES, IOWA.

BOILER-FURNACE AND SMOKE-CONSUMER.

SPECIFICATION forming part of Letters Patent No. 486,854, dated November29, 1892.

Application filed March 14, 1892- Serial No. 424,903- No model.)

To all whom it may concern:

Be it known that I, J AMEs CONNELLY, a citizen of the United States ofAmerica, residing at Des Moines, in the county of Polk and State ofIowa, have invented a Boiler-Furnace and Smoke-Consumer, of which thefollowing is a specification.

My invention consists in the arrangement and combination of an airsuperheater and distributer in a bridge-wall, an arch over thebridge-wall, an arch over the grate, an airpassage extending from thefront wall through the two arches to communicate with the airsuperheaterand distributer, a fuel-magazine, and mechanism for feeding fuel to thegrate through the arch over the grate, as hereinafter set forth, in sucha manner as to promote the durability and efficiency of the furnace, tosave time and labor in its operation, and to prevent the annoyances andwaste of valuable products of combustion incident to the escape of blacksmoke and soot.

In the accompanying drawings, Figure 1 is a vertical longitudinalsectional elevation of the complete furnace. Fig. 2 is a transversevertical sectional elevation on the line w of Fig. 1. Fig. 3 is aperspective view of the perforated air distributing pipe detached fromthe furnace. Fig. tis a perspective View of the air-conductingpipedetached from the furnace; and Fig. 5 is a transverse sectional viewthereof, showing the opening through which fuel is fed to the grate.

In the construction of the furnace as shown the numeral designates theside walls of the furnace proper, and 11 the bridge-wall thereof. Anarch 12 is formed over the combustionchamber, the keystone of which archis a tubular pipe 13, Fig. 4. The pipe 13 is provided with apartially-inclosed vertical aperture 14, through which fuel passes fromthe magazine 15 into the combustion-chamber and upon an archedfire-grate. This tube 13 is preferably made of fire-clay and is adaptedto serve as a keystone in the arch, as a vertical passage-way for fuel,and as horizontal passage-ways for air. A gate 16, diamond-shaped incross-section, is fitted within the aperture 14 and has fixed theretoajointed vertically-reciprocatin g pitman-rod 17 the upper end of whichrod is pivotally connected to a wrist-pin 18 on the wrist-wheel 19. The

opens into the upper end of a distributingpipe 25, located in the saidbridge-wall,to extend downward from the central part of the arch overthe bridge-wall and terminate within the bridge-wall in such a mannerthat the products of combustion rising from the grate will envelop theexposed and perforated portion of the said pipe, so that it will serveas an air superheater and distributer and discharge heated air from eachof its four plain sides to mingle with the products of combustion andpromote the combustion of all the valuable carbonaceous gases andparticles liberated by fire from the fuel on the grate. The pipe isprovided on all sides with a series of perforations 26, through whichthe atmos pheric air escapes.

The numeral 27 designates a boiler supported above a hot air chamber,through which the heated air passes onits way to the boiler-tubes 28 andto a point of exit through the draft-flue 29. I

Openings 30 in the front 31 of the furnace admit air to the passages 32,from whence said air passes through the conduits 33 and exitopenings 34into the ash-pit beneath the arched fire-grate, thus providing draft forthe fuel.

The fire grate is composed of a plurality of bars 35, triangular incross-section, each journaled at one end in the front 31 of the furnaceand at the other end in the support 36, fixed to the bridge-wall 11. Theends of said grate-bars 35 project through the front 31 and are providedwith intermeshing gear-wheels 37, one of said wheels being rotated bypower manually applied to a crank 38, fixed to the projecting end of theupper one of the series of bars. 3

Doors 39 in the front 31 of the furnace provide means of access to thecombustion-chamber above the arched lire-grate.

Doors 40, provided with registers 41, are located in the front 31 of thefurnace and provide access to the ash-pit.

The fuel is deposited on the arched grate by the automatic elevation ofthe gate 16, and the products of combustion pass rearwardly and oneither side of the pipe 25, there commingling with the superheatedatmospheric air exuding from the perforations 26, forms an inflammablegas, which in burning entirely consumes the said products of combustion.

WVhen it is desired to remove the ashes and clinkers from the archedfire-grate, the bars comprising said grate are rotated and the clinkerscomminuted and ground up thereby fall with the ashes through the spacesbetween said bars into the ash-pit, from whence they may be removedthrough the doors 40.

Having thus described my invention, what I claim as newtherein, anddesire to secure by Letters Patent of the United States therefor,

1. In a furnace, an arch over the grate, a pipe adapted to serve as akeystone in the top of said arch and provided with a longitudinalopening or passage-way for fuel, and air-passages at the sides of saidopening, a

fuel-magazine in the form of a hopper communicating with said fuelpassage-way in said pipe or keystone, a gate fitted in the bottom ofsaid magazine, and means for operating said gate at intervals, arrangedand combined to operate in the manner set forth, for the purposesstated.

2. In a furnace, a pipe having air-passages at its sides and verticalopenings in its center and adapted in shape to serve as a keystone, incombination with an arch over a grate, an arch over a bridge-wall inrear of the grate, and an air superheater and distributer extendingvertically from the bridgewall into the arch over the bridge-wall, andan air-passage extending therefrom through the arch to the rear end ofthe air-passage in the pipe that serves as a keystone in the arch overthe grate, to operate in the manner set forth, for the purposes stated.

3. An improved furnace comprising parallel walls, a bridge-wall betweensaid' Walls, a grate in front of the bridge-wall, an arch over thegrate, an arch over the bridge-wall, an air superheater and distributerextended vertically from the center of the bridge-wall into the archover the bridge-wall, air-passages extending horizontally through thearch over the grate and vertically through the arch over the bridge-wallto convey air into the said superheater and di'stributer, a fuelmagazine or hopper above the arch over the grate, a passage for fuel insaid arch, a gate having inclined sides suspended in the bottom of thehopper, and means for raising and lowering the gate, all arranged andcombined in the manner set forth, for the purposes stated.v JAMESOONNELLY. Witnesses:

J. RALPH ORWIG, THOMAS G. ORWIG.

